Dust collector



Get. 5 1926, Lamas M. A. E IIBEN DUST COLLECTOR Filed April 14, 1926 4 Sheets-Sheet 1 V Iv INVENTOR Oct 5 1926.

- wmss M. A EI B EN DUST COLLECTOR Filed April 14, 1926 4 Sheets-#Sheet v2 I IINVENTOR 1,$0T2,345 M. A. EIBEN DUST COLLECTOR Filed April 14, 1926 4 Sheets-Sheet g Patented Oct. 5, 1926.

MIGHAEIQ A. EIBEN, OF CLEVELAND, OHIO.

DUST COLLECTOR.

Application filed April 14, 1926. Serial No. 101,999.

This" invention relates to new and useful improvements in dust collectors for cleaning dusty air, a dust collector of the dry process suction type having an outer housing with a plurality of air cleaning screens mounted within and means for jarring dust accumulations therefrom.

An object of the invention is toprovide an improved arrangement of the screens and housing structure giving convenient access to the screens for inspection, cleaning or repairing. 1

Another object is to provide improved means for mounting the screens within the housing, permitting rapid and easy installation or removal for repairing.

Another object is to provide an improved screen structure materially increasing the with parts broken away.

low velocity air volume above the present type of dry process air cleaning cloth screens.

A further object is to provide means for joining the screens together in a cooperating gang. Other objects and features of the invention will be hereinafter pointed out and described.

In the accompanying drawings Figure 1 is a vertical sectional the dust collector.

Figure 2 is an enlarged section on line 22 of Fig. 1. I

Figure 3 is an enlarged detail of a screen view of Figure 4 is an edge v1ew thereof.

Figure 5 is an enlarged sectional view of the screen mounting means.

Figure 6 is an end view of a screen retaining bar. r p Figure 7 is an enlarged sectional view on line 77 of Fig. 1 showing a plurality of joined screen frames.

Figure 8 is a similar view showing a single screen frame.

Figure 9 is an enlarged sectional view on line 9-9 of Fig.3.

Referring specifically to the drawings, 5'

indicates generally the dust collector housing having side walls 6 and 7, front and rear walls 8 and 9' respectively, a roof 10 and hopper 11 with dum ing gate 12. The side wall 6 has a remova le panel 13 allowing access within, and a dusty air inlet 14, the opposite side wall 7 having a dusty air inlet 15 and clean air outlet 16. The, struc-v ture is divided into a' dusty air chamber. 17-

and clean air chamber 18 by a substanand nuts 42 and bolts 43 and inset tially U-shaped platform or walkway 19 suitably mounted within the housing providing a rectangular shaped opening 20 therein ad- 1' acent the rear wall 9 with a front edge 22 and side edges 23. The dusty air cleaning screens to be hereinafter described, are mounted over opening 20. Baflie plates 24 are secured under platform 19 extending from front to rear of the housing along opening edges 23 with the baflie faces converging downwardly.

The clean air chamber 18 has .a top 26 carrying on its under side spaced upper clamping means 27 cooperating for clamping the gang of screens with lower spaced clamping means 28 secured to platform 19 adjacent opening edges 23. A wooden filler strip 29 is secured to platform19 between the spaced clamping means 28. Grooved wooden spacing and filler strips30 -are secured to rear wall 9 extending vertically between screen clamping means 27 and 28.

a The upper screen clamping means 27 comprises spaced wooden plates 31 bolted to theunderside of top 26 by bolts and nuts 32 and bolts 33and nuts 34. The bolts 33 are extra long for receiving threaded cone nuts 35 adapted to engage and force clamping bars 36 against the top sides of the screen frames, clamping the screens securely between. The clamping bars 36 comprise an angle iron 37 and beveled wooden filler 38 carrying a flat metal strip 39 on its beveled face 38. The cone nut when drawn up against the angular metal strip 39 shifts the bar 36 against the screens.

- The lower screen clamping means 28 comprises spaced wooden base plates 40, having screen supporting steps 41, secured by bolts nuts 44 to platform 19 and T-iron' braces 19. Bolts 43 are extra. long, receiving cone nuts 35 forcing clamping bars 36 against the lower sides of the screen frames, clamping the screens 25 securely between.

The screens 25 are preferably of wooden construction, each screen comprising solid top and bottom members 46 and 47 joined at the ends by vertical spaced side members 48 and 49 providing an opening 50 between at each side of the frame. Intermediate brace members 51 are joined to side members 48 and 49.. A continuous square groove 52 is'provided on bothfaces of members 46 and 47 and on the front and rear faces of side members. 48 and 49 respectively. Vertically spaced rods 53 are inset into the front and rear faces of members 46, 47 and 51, and

- secured by staples 54 thereon and nails 55 by nails 66.

at the ends.

Each face of the frames 45 is covered with a screen cloth or fabric 56 of flannel or other close texture or weave, securely attached thereto by means of a heavy cord 57 pressing and locking the cloth 56 adjacent the edges into grooves 52 and secured with nails 58. The brace members 51 and rods 53 prevent the suctionwithin the frame, created by a suction blower. not shown, from materially drawing and billowing the cloth together and thereby restrictlng their screening area and the air passage between. The outer face the back of strip 63 provides an air tight packing between the side members 49. The cloth covered faces and tongues 64 of strips 63 are adapted to snugly engage the grooved faces 60 'of strips 59 providing an air tight joint between the screen frames, preventingdust laden air drawn up between escaping mto' theclean air chamber.

The screens are mounted 1n the housing over platform opening 20 by stacking and aligning the screens 25, on base plate steps 41 with the joint -tongue of the screen adgjacent the rear wall 9 engaging the grooves of spacing strips 30 thereon, as shown in the housing.

Fig. 2. The screens are pressed together and against the back, snugly engaging the frame tongue and groove joints together and the lower and upper clamping bars are then positioned and clamped against the screen frame sides by screwing up cone nuts 35. A clearance normally closed by bars 36- is provided betweenthe screen tops and plates 31, allowing quick stacking of the screens, or removal sidewise of an intermediate screen from the stack for repairs.

Means'for rapping the screens and jarring loose the dustaccumulating on the cloth is provided comprising a shaft 67 driven by suitable means such as a driven pulley wheel 66 with idler 67' mounted thereon outside The shaft is journaled in bearing 68 moun d on housing back 9 and a bearing 69 mounted on a vertical standard 70 secured to platform 19 and top 26. C01- lars 71 mounted on shaft 67 carry fingers 7 2 adapted to engage arms 74of rapping block (preferably of wood) 73 normally held The overlapping cloth at against the screen sides by tension of supporting springs 75 secured to standards from inlets 14 and 15 the dust laden air which impinges against the baffles 24 deflecting the heavier particles of dust into the hopper 11. The dusty air is deflected 1 around baffles 24 and drawn up through platform opening 20 into spaces 25 between the screens 25 from where the air is drawn through cleansing cloths 56 into the interior of the screens, passing out through the open frame sides 50, as shown in Figs. 1, 2 and 7, into the clean air chamber 18 and out through outlet 16 to the suction blower. The dust accumulating on the cloths 56 is vibrated loose at intervals by rapping blocks 73, keeping the cloths (screens) clean and eflicient, the suction blower being stopped while the rapping blocks are operating, and vice versa. v

The ample spacing 25 between thescreen cloths of each screen provides a low velocity of dusty air passing between the cloths, r ducing the wear thereof by dust and grit particles carried by the air and allowing the dust to settle in the hopper with a minimum of agitation. V

The screen frame structure with outlet openings at each side thereof allows a materially increased volume of air to pass through an air cleaning screen of this type which usually has only a single outlet at i one side or the top, restricting the flow of air.

The platform or walkway about the screen gang allows easy and convenient access to the screens. With the suction fan located on the cleana r outlet, no dust or abrasive may come into contact with the fan. 7

While I have shown and described one embodiment of my invention, obviously various changes in the details of construction and parts may be resorted to without departing from the spirit and scope of the appended claims. 1

I claim:

1. A dust collector comprising a housmg having a hopper bottom, a platform there-' in over the hopper, said platform having an opening communicating with the hopper, an

ize

inlet for dusty air below the platform, an

outlet for clean air above the platform, a set of screens supportedon the platform above said opening and extending from the platform to the top of the housing, and means to jar the screens, said platform being substantially U-shaped, to extend around three sides of the opening.

2. In a dust collector, the combination of a housing having a hopper bottom, a platscreens supported by the platform over said opening and extending from the platform to the top of the housing, and means carried by said platform and said top to removably clamp the screens in position.

4. In a dust collector, the .combinationwith screens, supports on which they are mounted, and means to clamp the screensto said supports comprising an inclined strip bearing against the screen frames, and bolts provided with tapered nuts having a wedge bearing against said strips to wedge the same against the screen frame.

5. In a dust collector, the combination with screens, supports on which they are.

mounted, and means to clamp the screens to said supports comprising an inclined strip bearing against the screen frames, and bolts provided with tapered nuts having a wedge bearing against said. strips to wedge the same against the screen frames, the supporting means including a platform and base plates thereon upon which the screens and said strips rest.

6; In -a of a housing, a platform therein having an opening, screens extending between the platdust collector. the combination form and the top of the housing and across said opening, said platform extending around opposite sides of the opening, and means at opposite ends of thescreens to clamp the same to the platform and to the top of the housing.

7. In a dust collector, the combination of a housing, a platform therein having an opening, screens extending between the platform and the top of the housing and across said opening, said platform extending around opposite sides of the opening, and means at opposite ends of the screens to clam the same to the platform and tothe top of the housing, said means including removable wedging devices mounted on the platform and the top of the housing and engaging 0p 7 posite ends of the screen frames at the top and bottom thereof respectively.

8. In a dust collector, the combination of a housing having a hopper bottom, a plat form in the housing dividing the same into clean and dusty air chambers, said platform having an opening above the housing and having depending bafile plates around said opening, screens mounted on the platform above said opening, and means to jar the screens, said baflie plates being arranged to direct dust down into the hopper.

9. In a dust collector, the combination of a housing having a hopper bottom, a platform'in the housing dividing the same into clean and dusty air chambers, said platform having depending bafile plates around said 0 ening,-screens mounted -on the platform a ove said opening, and means to jar the screens, said bafile plates being arranged to direct dust down into the hopper, the housing having dusty air inlets under the platform and directed toward said baffle plates.

7 In testimony nature.

. MICI-IAEL A. EIBEN.

whereof, I do afiix my sig- 

